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第 4 章 OLAP の使用
文法規則 8
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<WINDOW AGGREGATE FUNCTION> ::= <SIMPLE WINDOW AGGREGATE FUNCTION> <STATISTICAL AGGREGATE FUNCTION>
<AGGREGATE FUNCTION> ::=
<DISTINCT AGGREGATE FUNCTION> <SIMPLE AGGREGATE FUNCTION>
<STATISTICAL AGGREGATE FUNCTION>
<DISTINCT AGGREGATE FUNCTION> ::=
<BASIC AGGREGATE FUNCTION TYPE> <LEFT PAREN> <DISTINCT> <EXPRESSION> <RIGHT PAREN>
LIST <LEFT PAREN> DISTINCT <EXPRESSION> [ <COMMA> <DELIMITER> ]
[ <ORDER SPECIFICATION> ] <RIGHT PAREN>
<BASIC AGGREGATE FUNCTION TYPE> ::=
SUM MAX MIN AVG COUNT
<SIMPLE AGGREGATE FUNCTION> ::=
<SIMPLE AGGREGATE FUNCTION TYPE> <LEFT PAREN> <EXPRESSION> <RIGHT PAREN>
LIST <LEFT PAREN> <EXPRESSION> [ <COMMA> <DELIMITER> ]
[ <ORDER SPECIFICATION> ] <RIGHT PAREN>
<SIMPLE AGGREGATE FUNCTION TYPE> ::= <SIMPLE WINDOW AGGREGATE FUNCTION TYPE>
<SIMPLE WINDOW AGGREGATE FUNCTION> ::=
<SIMPLE WINDOW AGGREGATE FUNCTION TYPE> <LEFT PAREN> <EXPRESSION> <RIGHT PAREN>
GROUPING FUNCTION
<SIMPLE WINDOW AGGREGATE FUNCTION TYPE> ::= <BASIC AGGREGATE FUNCTION TYPE>
STDDEV STDDEV_POP STDDEV_SAMP
VARIANCE VARIANCE_POP VARIANCE_SAMP
<STATISTICAL AGGREGATE FUNCTION> ::=
<STATISTICAL AGGREGATE FUNCTION TYPE> <LEFT PAREN> <DEPENDENT EXPRESSION> <COMMA> <INDEPENDENT EXPRESSION> <RIGHT PAREN>
<STATISTICAL AGGREGATE FUNCTION TYPE> ::= CORR COVAR_POP COVAR_SAMP REGR_R2
REGR_INTERCEPT REGR_COUNT REGR_SLOPE
REGR_SXX REGR_SXY REGR_SYY REGR_AVGY
REGR_AVGX
<WINDOW NAME OR SPECIFICATION> ::=
<WINDOW NAME>
<WINDOW NAME> ::= <IDENTIFIER>
<WINDOW CLAUSE> ::= <WINDOW WINDOW DEFINITION LIST>
パフォーマンス&チューニング・ガイド | 99 |